Caster wheel



April 1 1924' 0. w. MlLL ET CAS'I'ER WHEEL Filed Jant 5, 1.920

Patented Apr. 1, 1924.

CHARLES w. MILLET, or EVANSVILLE, INDIANA.

CASTER WHEEL.

I Application filed January 3, 1920. Serial No. 349,319.

'10 all whom it may concern:

lie it known that I, Cnannns W. MILLET, a citizen of-the United States, residing at llvansville. in the county of Vanderburg and State of Indiana, have invented certain new and useful Improvements in Caster 'heels of which the following is a specification.

This invention relates to caster and similar wheels and has as one of its objects to provide a wheel of this type having its tread nnide up of a plurality of paper or similar liber segments so arranged that there will he no likelihood of tearing away of th'e tread and so that the tread will be exceptionally dm'able. It has been proposed to manufacture easter and similar wheels having their treadsof paper and comprising a number of annu-' lar disks assembled face to face. It has been found that a paper tread thus constructedwill not be durable and will be extremely liable to becomesoon'torn or worn away thus impairing or destroying the etliciency of the wheel, and this is due to the fact that in a tread. so constructed,'comparatively few of the fibers extend radial to the' axis of the wheel, the greater number extending chordal to the circumference of the wheel. The present invention therefore has as its object to greatly improve upon this proposed construction by formingthe tread of the wheel of a plural ity of segments of paper, each segment be ing scent and arranged that the fibres therein, when the segment is assembled with others of its kind to form the tread of the wheel, will extend radial to the axis of" the wheel and therefore all terminate at the tread surface.

Another object of the invention is to provide a novel means for holding the tread segments in their assembled relation and against radial displacement.

In the accompanying drawing:v

Figure 1 is a perspective view of a wheel constructed in accordance with the present invention Fig. 2 is a diametric section therethrough;

Fig. 3 is.a similar .view illustrating the parts comprising the wheel'disassembled;

Fi 4 is a view illustrating the manner in whic supported in an annular serles 1n the manufacture of the wheel. 1 h

In the drawing the wheel is illustrated as the tread segments are arranged and comprising a hub 1, side plates or disks 2, I

and a tread 3. For a purpose to be presentl explained, the side disks 2 are formed eac in its marginal portion in its inner face with an annular channel or groove 4 preferably formed by stamping up the blank from which the disk is made. The disks are provided axially with openings 5 and they" are secured together by fitting the ends of the hub fi through the openings 5 and over: turning or riveting down the ends of the said hub as indicated by the numeral 6.

As before stated, the tread ofthe wheel is made up of a number of segments of paper or similar fibrous and semi-yi'eldable material and these segments are arranged in an annular series as clearly shown in Fig. 4 of the drawings. and in the manufacture of the wheel they a re assembled in such series within an opening A formed in a block B, in. which opening they may be retained while the side disks 2 are applied and secured tof gether by turning down the ends of the hub.

Each segment, indicated by the numeral 'l, is preferably of multiply structure and the plies are so arranged that the fibers in all of the plies willextend in a common .direction. The segments are likewiseso cut that the lines of extent of the fiberswillbe radial to the axis of the wheel when the tread.

In manufacturing the wheel, the side disks 2 are subjected to considerable pressure at the time they are. secured together and as they are subjected to pressure, their marginal portions will be caused to firmly compress and bind, inan endwise direction,

the segments 7 of the tread. In this mancurely. braced against radial displacement.

After all of the parts of. the'wheel have been assembled in the manner above de-' scribed, any desired shape may be given the tread by any suitable method of dressing.

Having thus described the invention, What v is claimed as newisz" A caster compr sing mating palates prosegments are assembled to complete the v ided with central apertures and opposing nular halfextending beyond the marginal marginal channels, a; hub member securing edges bf the channels, said tread member betheplates in spaced relatiom tread me1n-' ing com sed of a luralit-y of fibrous disks her having an annular waistline dividingwhe arrang with the fibers in radial planes of e tread into substmg ti ally; an' inner and an the caster.

outer ha1f,its infier'efi'iinlar'half being firm In testimony whereof I affix my signature. 1y held-in said channels and its outer an- CHARLES W. MILLET. [1,. s.] 

